<span>I would contact your instructor, because I think there may be a typo in the original problem. I worked it out and got x = -4 </span>The steps go like this: 1. Distribute the 3 to each of 1/3x and 1. This gives you <span>x + 3 + 4</span> on the left side. Simplify that to x + 7. 2. Distribute the -4 to each of x and 3. This gives you -1 - 4x - 12 on the right side. Simplify that to -13 - 4x. Now you have <span>x + 7 = -13 - 4x.</span> 3. Subtract 7 from both sides. 4. Add 4x to both sides. Now you have 5x = -20 (This is the step Antwon gets to) 5. Divide by 5. You get <span>x = -4 </span>
We know that the volume is: V = 1 gallon = 231 in³ Also : r = 3 in. The volume of a cylinder: V = r² π h 231 = 3³ · 3.14 · h 231 = 9 · 3.14 · h 231 = 28.26 h h = 231 : 28.26 h = 8.17 ≈ 8 in Answer: C) 8 in.
